What HighSign is

HighSign is a live AI governance system for professional-services organisations: it turns a written AI policy into an always-on answer for every tool your people actually use.

The problem it solves

Staff at accounting, legal and conveyancing firms already use AI, whether or not it is sanctioned. A bookkeeper pastes a client's financials into a free chatbot to draft a summary. A paralegal uses a transcription tool that stores audio offshore with a vendor nobody has assessed. None of this shows up in a slide deck about AI policy, because the policy usually lives in a document nobody opens twice.

AI oversight is arriving everywhere: the EU AI Act, tightening privacy and data-protection laws across jurisdictions, and clients and insurers who now ask how you govern AI. Whatever your regime, the AI your team uses is your liability and the record is what you must be able to produce. "We didn't know staff were using that tool" stops being a defensible position. Firms need to be able to show, for any tool and any kind of client data, what was allowed, why, and since when. A policy that ages in a drawer cannot produce that evidence.

What HighSign actually is

HighSign is not a template pack of policy wording, and it is not a six-figure enterprise GRC suite built for a compliance department of twenty. It is a small, continuously-running system that sits between your policy and your staff:

• Your risk or compliance lead writes the policy as rules, once, for each kind of data the firm handles.
• HighSign keeps a live register of AI tools and computes a verdict for every tool against every data class from those rules.
• Staff check before they paste: they open a shared link, name a tool, pick the kind of data, and get an answer.

Nothing about this needs a login for most of the firm, and nothing about the verdict depends on an AI model guessing. See How it works for the mechanics.

The core promise

Ask HighSign about a tool and a kind of data, and you get:

• An instant verdict: green (approved), amber (approved with conditions), red (not approved), or not-assessed (nobody has looked yet).
• A reason: the specific rule the verdict is based on, in plain language.
• An audit trail: every check, request, exception and attestation is recorded, so when a client, insurer or regulator asks what your AI governance looks like, you have an answer that is current rather than reconstructed from memory.

Who it is for

HighSign is built for small and mid-sized professional-services organisations, the kind with a partner or practice manager who owns risk but no dedicated compliance department. One person (or a small team) runs the control plane: writing policy, curating the tool register, deciding requests, granting exceptions. Everyone else, the accountants, lawyers, conveyancers and support staff doing the work, reaches HighSign through a link with no account to set up and nothing to remember.

To see the model in full and try it yourself, go to How it works or jump straight to the Quickstart.